/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:26:12,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:26:12,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:26:12,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:26:12,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:26:12,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:26:12,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:26:12,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:26:12,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:26:12,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:26:12,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:26:12,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:26:12,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:26:12,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:26:12,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:26:12,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:26:12,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:26:12,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:26:12,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:26:12,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:26:12,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:26:12,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:26:12,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:26:12,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:26:12,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:26:12,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:26:12,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:26:12,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:26:12,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:26:12,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:26:12,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:26:12,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:26:12,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:26:12,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:26:12,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:26:12,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:26:12,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:26:12,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:26:12,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:26:12,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:26:12,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:26:12,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:26:12,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:26:12,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:26:12,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:26:12,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:26:12,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:26:12,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:26:12,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:26:12,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:26:12,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:26:12,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:26:12,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:26:12,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:26:12,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:26:12,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:26:12,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:26:12,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:26:12,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:26:12,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:26:12,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:26:12,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:26:12,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:26:12,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:26:12,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:26:12,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:26:12,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:26:12,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:26:12,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:26:12,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:26:12,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:26:12,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:26:12,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:26:12,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:26:12,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:26:12,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:26:12,997 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:26:12,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-29 07:26:13,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2745116/f1ff7824e478457391d0292676af898a/FLAGf755e1adf [2020-10-29 07:26:14,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:26:14,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-29 07:26:14,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2745116/f1ff7824e478457391d0292676af898a/FLAGf755e1adf [2020-10-29 07:26:14,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab2745116/f1ff7824e478457391d0292676af898a [2020-10-29 07:26:14,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:26:14,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:26:14,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:26:14,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:26:14,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:26:14,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:26:14" (1/1) ... [2020-10-29 07:26:14,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e047d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:14, skipping insertion in model container [2020-10-29 07:26:14,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:26:14" (1/1) ... [2020-10-29 07:26:14,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:26:14,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:26:14,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:26:14,832 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:26:15,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:26:15,123 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:26:15,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15 WrapperNode [2020-10-29 07:26:15,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:26:15,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:26:15,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:26:15,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:26:15,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... [2020-10-29 07:26:15,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:26:15,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:26:15,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:26:15,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:26:15,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:26:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:26:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:26:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:26:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:26:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:26:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:26:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:26:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:26:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:26:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:26:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:26:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:26:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:26:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:26:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:26:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:26:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:26:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:26:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:26:17,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:26:17,388 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:26:17,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:26:17 BoogieIcfgContainer [2020-10-29 07:26:17,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:26:17,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:26:17,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:26:17,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:26:17,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:26:14" (1/3) ... [2020-10-29 07:26:17,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccdc70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:26:17, skipping insertion in model container [2020-10-29 07:26:17,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:26:15" (2/3) ... [2020-10-29 07:26:17,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccdc70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:26:17, skipping insertion in model container [2020-10-29 07:26:17,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:26:17" (3/3) ... [2020-10-29 07:26:17,402 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label04.c [2020-10-29 07:26:17,416 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:26:17,423 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:26:17,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:26:17,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:26:17,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:26:17,476 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:26:17,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:26:17,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:26:17,476 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:26:17,476 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:26:17,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:26:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:26:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 07:26:17,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:17,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:17,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:17,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1113659686, now seen corresponding path program 1 times [2020-10-29 07:26:17,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:17,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378549114] [2020-10-29 07:26:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:18,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:18,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 07:26:18,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-29 07:26:18,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:18,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:18,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 07:26:18,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:26:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:18,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:18,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:18,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:26:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:18,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:19,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378549114] [2020-10-29 07:26:19,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:19,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:26:19,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702865457] [2020-10-29 07:26:19,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:26:19,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:19,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:26:19,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:26:19,061 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-29 07:26:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:23,564 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-29 07:26:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:26:23,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-29 07:26:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:23,586 INFO L225 Difference]: With dead ends: 891 [2020-10-29 07:26:23,586 INFO L226 Difference]: Without dead ends: 565 [2020-10-29 07:26:23,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-29 07:26:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-29 07:26:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-29 07:26:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-29 07:26:23,724 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 59 [2020-10-29 07:26:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:23,725 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-29 07:26:23,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:26:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-29 07:26:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 07:26:23,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:23,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:23,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:26:23,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:23,737 INFO L82 PathProgramCache]: Analyzing trace with hash -179012903, now seen corresponding path program 1 times [2020-10-29 07:26:23,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:23,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272679954] [2020-10-29 07:26:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 07:26:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:26:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-29 07:26:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:25,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:26:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 07:26:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:25,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:25,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:25,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:25,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:26:25,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:25,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:26:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:26:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:25,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:25,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:26:25,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:26:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:25,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:26:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:25,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272679954] [2020-10-29 07:26:25,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:25,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:26:25,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626182577] [2020-10-29 07:26:25,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:26:25,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:26:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:26:25,871 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 5 states. [2020-10-29 07:26:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:28,445 INFO L93 Difference]: Finished difference Result 1672 states and 2583 transitions. [2020-10-29 07:26:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:26:28,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 07:26:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:28,457 INFO L225 Difference]: With dead ends: 1672 [2020-10-29 07:26:28,457 INFO L226 Difference]: Without dead ends: 1117 [2020-10-29 07:26:28,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:26:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-29 07:26:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 929. [2020-10-29 07:26:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-29 07:26:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1288 transitions. [2020-10-29 07:26:28,546 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1288 transitions. Word has length 128 [2020-10-29 07:26:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:28,548 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1288 transitions. [2020-10-29 07:26:28,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:26:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1288 transitions. [2020-10-29 07:26:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 07:26:28,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:28,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:28,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:26:28,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1968714655, now seen corresponding path program 1 times [2020-10-29 07:26:28,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:28,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091174055] [2020-10-29 07:26:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 07:26:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-29 07:26:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:29,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:26:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:29,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:29,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:29,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:26:29,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:29,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:29,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:29,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:26:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:26:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:29,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:26:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:29,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091174055] [2020-10-29 07:26:29,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:29,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:26:29,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989928564] [2020-10-29 07:26:29,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:29,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:29,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:29,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:29,660 INFO L87 Difference]: Start difference. First operand 929 states and 1288 transitions. Second operand 7 states. [2020-10-29 07:26:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:33,030 INFO L93 Difference]: Finished difference Result 2250 states and 3195 transitions. [2020-10-29 07:26:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:26:33,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-29 07:26:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:33,046 INFO L225 Difference]: With dead ends: 2250 [2020-10-29 07:26:33,046 INFO L226 Difference]: Without dead ends: 1327 [2020-10-29 07:26:33,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:26:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-29 07:26:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1311. [2020-10-29 07:26:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-29 07:26:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1690 transitions. [2020-10-29 07:26:33,138 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1690 transitions. Word has length 132 [2020-10-29 07:26:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:33,140 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1690 transitions. [2020-10-29 07:26:33,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1690 transitions. [2020-10-29 07:26:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 07:26:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:33,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:33,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:26:33,156 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:33,156 INFO L82 PathProgramCache]: Analyzing trace with hash -561334944, now seen corresponding path program 1 times [2020-10-29 07:26:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:33,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012493563] [2020-10-29 07:26:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:38,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:26:38,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:26:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:26:38,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:38,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:26:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:26:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:38,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:38,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:26:38,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:38,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:38,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:38,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:26:38,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:26:38,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:38,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:38,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:26:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:26:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:26:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:38,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:26:38,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:26:38,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:38,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:26:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:26:39,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012493563] [2020-10-29 07:26:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:26:39,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423473948] [2020-10-29 07:26:39,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:26:39,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:39,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:26:39,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:26:39,322 INFO L87 Difference]: Start difference. First operand 1311 states and 1690 transitions. Second operand 8 states. [2020-10-29 07:26:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:42,327 INFO L93 Difference]: Finished difference Result 3010 states and 3820 transitions. [2020-10-29 07:26:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:26:42,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-29 07:26:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:42,342 INFO L225 Difference]: With dead ends: 3010 [2020-10-29 07:26:42,343 INFO L226 Difference]: Without dead ends: 1705 [2020-10-29 07:26:42,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:26:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2020-10-29 07:26:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1125. [2020-10-29 07:26:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-10-29 07:26:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1477 transitions. [2020-10-29 07:26:42,417 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1477 transitions. Word has length 226 [2020-10-29 07:26:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:42,419 INFO L481 AbstractCegarLoop]: Abstraction has 1125 states and 1477 transitions. [2020-10-29 07:26:42,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:26:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1477 transitions. [2020-10-29 07:26:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 07:26:42,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:42,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:42,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:26:42,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1039124158, now seen corresponding path program 1 times [2020-10-29 07:26:42,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:42,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509241128] [2020-10-29 07:26:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 07:26:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:26:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:44,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:44,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:26:44,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:44,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:45,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:26:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 07:26:45,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:45,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:26:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:26:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:26:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:26:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:26:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:26:45,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509241128] [2020-10-29 07:26:45,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:45,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:26:45,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966700783] [2020-10-29 07:26:45,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:45,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:45,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:45,527 INFO L87 Difference]: Start difference. First operand 1125 states and 1477 transitions. Second operand 7 states. [2020-10-29 07:26:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:48,568 INFO L93 Difference]: Finished difference Result 3002 states and 4064 transitions. [2020-10-29 07:26:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:26:48,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-29 07:26:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:48,590 INFO L225 Difference]: With dead ends: 3002 [2020-10-29 07:26:48,590 INFO L226 Difference]: Without dead ends: 1883 [2020-10-29 07:26:48,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:26:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2020-10-29 07:26:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1687. [2020-10-29 07:26:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-29 07:26:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2137 transitions. [2020-10-29 07:26:48,684 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2137 transitions. Word has length 241 [2020-10-29 07:26:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:48,685 INFO L481 AbstractCegarLoop]: Abstraction has 1687 states and 2137 transitions. [2020-10-29 07:26:48,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2137 transitions. [2020-10-29 07:26:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 07:26:48,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:48,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:48,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:26:48,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1791033673, now seen corresponding path program 1 times [2020-10-29 07:26:48,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:48,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648721890] [2020-10-29 07:26:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-29 07:26:53,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:26:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4862 [2020-10-29 07:26:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:53,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 07:26:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 07:26:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:53,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:26:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:53,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:26:53,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:53,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:26:53,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:26:53,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:53,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:53,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:26:53,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:26:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:54,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:54,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:54,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:26:54,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-29 07:26:54,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:54,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:26:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:54,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-29 07:26:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:54,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:54,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:26:54,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:26:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 315 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 07:26:55,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648721890] [2020-10-29 07:26:55,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:55,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:26:55,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617698471] [2020-10-29 07:26:55,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:26:55,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:26:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:26:55,044 INFO L87 Difference]: Start difference. First operand 1687 states and 2137 transitions. Second operand 8 states. [2020-10-29 07:27:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:00,413 INFO L93 Difference]: Finished difference Result 3946 states and 5138 transitions. [2020-10-29 07:27:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:27:00,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-10-29 07:27:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:00,428 INFO L225 Difference]: With dead ends: 3946 [2020-10-29 07:27:00,428 INFO L226 Difference]: Without dead ends: 2077 [2020-10-29 07:27:00,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:27:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-29 07:27:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1877. [2020-10-29 07:27:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-29 07:27:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2219 transitions. [2020-10-29 07:27:00,497 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2219 transitions. Word has length 336 [2020-10-29 07:27:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:00,497 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2219 transitions. [2020-10-29 07:27:00,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:27:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2219 transitions. [2020-10-29 07:27:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-29 07:27:00,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:00,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:00,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:27:00,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1715545387, now seen corresponding path program 1 times [2020-10-29 07:27:00,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:00,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352217553] [2020-10-29 07:27:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-29 07:27:02,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:27:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-29 07:27:02,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:02,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:27:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:27:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:27:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:27:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:03,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:27:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:03,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:27:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:27:03,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352217553] [2020-10-29 07:27:03,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:03,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:03,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789171478] [2020-10-29 07:27:03,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:03,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:03,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:03,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:03,645 INFO L87 Difference]: Start difference. First operand 1877 states and 2219 transitions. Second operand 7 states. [2020-10-29 07:27:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:07,412 INFO L93 Difference]: Finished difference Result 4147 states and 5071 transitions. [2020-10-29 07:27:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:27:07,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-29 07:27:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:07,433 INFO L225 Difference]: With dead ends: 4147 [2020-10-29 07:27:07,433 INFO L226 Difference]: Without dead ends: 2642 [2020-10-29 07:27:07,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:27:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-10-29 07:27:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2439. [2020-10-29 07:27:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2439 states. [2020-10-29 07:27:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 2929 transitions. [2020-10-29 07:27:07,510 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 2929 transitions. Word has length 362 [2020-10-29 07:27:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:07,510 INFO L481 AbstractCegarLoop]: Abstraction has 2439 states and 2929 transitions. [2020-10-29 07:27:07,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 2929 transitions. [2020-10-29 07:27:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 07:27:07,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:07,520 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:07,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:27:07,521 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash 256690366, now seen corresponding path program 1 times [2020-10-29 07:27:07,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:07,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480257252] [2020-10-29 07:27:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:08,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:12,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-29 07:27:12,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:27:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 07:27:12,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:12,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-29 07:27:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:27:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:12,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:12,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:12,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:12,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:12,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:12,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:13,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 07:27:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-29 07:27:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:13,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:13,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:27:13,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 07:27:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:13,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:27:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 443 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-29 07:27:13,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480257252] [2020-10-29 07:27:13,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:13,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:13,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388451990] [2020-10-29 07:27:13,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:13,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:13,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:13,645 INFO L87 Difference]: Start difference. First operand 2439 states and 2929 transitions. Second operand 7 states. [2020-10-29 07:27:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:16,578 INFO L93 Difference]: Finished difference Result 4536 states and 5540 transitions. [2020-10-29 07:27:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:27:16,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-29 07:27:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:16,593 INFO L225 Difference]: With dead ends: 4536 [2020-10-29 07:27:16,593 INFO L226 Difference]: Without dead ends: 2469 [2020-10-29 07:27:16,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:27:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-10-29 07:27:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2441. [2020-10-29 07:27:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2020-10-29 07:27:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 2923 transitions. [2020-10-29 07:27:16,676 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 2923 transitions. Word has length 433 [2020-10-29 07:27:16,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:16,677 INFO L481 AbstractCegarLoop]: Abstraction has 2441 states and 2923 transitions. [2020-10-29 07:27:16,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 2923 transitions. [2020-10-29 07:27:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-29 07:27:16,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:16,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:16,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:27:16,689 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1712256269, now seen corresponding path program 1 times [2020-10-29 07:27:16,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:16,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827568937] [2020-10-29 07:27:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:16,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:20,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:20,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-29 07:27:20,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:27:20,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3713 [2020-10-29 07:27:20,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:20,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:20,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:27:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:27:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:20,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:20,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:20,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:27:20,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:20,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:20,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:20,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:20,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:20,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:27:20,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:20,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:21,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:21,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:21,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:27:21,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:21,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:21,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:27:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:27:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 07:27:21,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:21,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 07:27:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 07:27:21,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827568937] [2020-10-29 07:27:21,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:21,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:21,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025569874] [2020-10-29 07:27:21,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:21,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:21,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:21,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:21,865 INFO L87 Difference]: Start difference. First operand 2441 states and 2923 transitions. Second operand 7 states. [2020-10-29 07:27:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:24,251 INFO L93 Difference]: Finished difference Result 4364 states and 5346 transitions. [2020-10-29 07:27:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:27:24,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-29 07:27:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:24,266 INFO L225 Difference]: With dead ends: 4364 [2020-10-29 07:27:24,266 INFO L226 Difference]: Without dead ends: 2479 [2020-10-29 07:27:24,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:27:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2020-10-29 07:27:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2443. [2020-10-29 07:27:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-29 07:27:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 2914 transitions. [2020-10-29 07:27:24,376 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 2914 transitions. Word has length 454 [2020-10-29 07:27:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:24,377 INFO L481 AbstractCegarLoop]: Abstraction has 2443 states and 2914 transitions. [2020-10-29 07:27:24,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 2914 transitions. [2020-10-29 07:27:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-29 07:27:24,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:24,383 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:24,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:27:24,383 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 162401286, now seen corresponding path program 1 times [2020-10-29 07:27:24,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:24,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176520177] [2020-10-29 07:27:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1783 [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-29 07:27:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:27:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:26,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:26,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:27:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-29 07:27:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:27:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 454 proven. 2 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-29 07:27:27,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176520177] [2020-10-29 07:27:27,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:27,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:27,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633550252] [2020-10-29 07:27:27,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:27,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:27,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:27,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:27,348 INFO L87 Difference]: Start difference. First operand 2443 states and 2914 transitions. Second operand 7 states. [2020-10-29 07:27:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:29,971 INFO L93 Difference]: Finished difference Result 4546 states and 5531 transitions. [2020-10-29 07:27:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:27:29,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-29 07:27:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:29,984 INFO L225 Difference]: With dead ends: 4546 [2020-10-29 07:27:29,984 INFO L226 Difference]: Without dead ends: 2471 [2020-10-29 07:27:29,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:27:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-10-29 07:27:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2443. [2020-10-29 07:27:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-29 07:27:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 2891 transitions. [2020-10-29 07:27:30,065 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 2891 transitions. Word has length 461 [2020-10-29 07:27:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:30,066 INFO L481 AbstractCegarLoop]: Abstraction has 2443 states and 2891 transitions. [2020-10-29 07:27:30,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 2891 transitions. [2020-10-29 07:27:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 07:27:30,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:30,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:30,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:27:30,072 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:30,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:30,073 INFO L82 PathProgramCache]: Analyzing trace with hash 500580904, now seen corresponding path program 1 times [2020-10-29 07:27:30,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:30,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507601650] [2020-10-29 07:27:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-29 07:27:32,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1875 [2020-10-29 07:27:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:27:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:27:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:27:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:32,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:32,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:27:32,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:27:32,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:27:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:27:32,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:27:32,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:27:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:27:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 564 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-29 07:27:33,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507601650] [2020-10-29 07:27:33,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:33,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:27:33,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504203479] [2020-10-29 07:27:33,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:27:33,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:33,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:27:33,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:27:33,132 INFO L87 Difference]: Start difference. First operand 2443 states and 2891 transitions. Second operand 8 states. [2020-10-29 07:27:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:35,846 INFO L93 Difference]: Finished difference Result 4911 states and 5965 transitions. [2020-10-29 07:27:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:27:35,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-29 07:27:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:35,861 INFO L225 Difference]: With dead ends: 4911 [2020-10-29 07:27:35,861 INFO L226 Difference]: Without dead ends: 3024 [2020-10-29 07:27:35,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:27:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-10-29 07:27:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3007. [2020-10-29 07:27:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3007 states. [2020-10-29 07:27:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 3509 transitions. [2020-10-29 07:27:35,953 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 3509 transitions. Word has length 468 [2020-10-29 07:27:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:35,954 INFO L481 AbstractCegarLoop]: Abstraction has 3007 states and 3509 transitions. [2020-10-29 07:27:35,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:27:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 3509 transitions. [2020-10-29 07:27:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-29 07:27:35,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:35,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:35,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:27:35,960 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:35,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1214859156, now seen corresponding path program 1 times [2020-10-29 07:27:35,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:35,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645636377] [2020-10-29 07:27:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2002 [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-29 07:27:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:27:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:27:38,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:38,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:38,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 07:27:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 07:27:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-29 07:27:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:38,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:27:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 454 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-29 07:27:38,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645636377] [2020-10-29 07:27:38,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:38,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:38,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738094409] [2020-10-29 07:27:38,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:38,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:38,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:38,918 INFO L87 Difference]: Start difference. First operand 3007 states and 3509 transitions. Second operand 7 states. [2020-10-29 07:27:40,096 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:27:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:41,677 INFO L93 Difference]: Finished difference Result 5474 states and 6484 transitions. [2020-10-29 07:27:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:27:41,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2020-10-29 07:27:41,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:41,690 INFO L225 Difference]: With dead ends: 5474 [2020-10-29 07:27:41,691 INFO L226 Difference]: Without dead ends: 3015 [2020-10-29 07:27:41,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:27:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-10-29 07:27:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3001. [2020-10-29 07:27:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3001 states. [2020-10-29 07:27:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3405 transitions. [2020-10-29 07:27:41,774 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3405 transitions. Word has length 498 [2020-10-29 07:27:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:41,775 INFO L481 AbstractCegarLoop]: Abstraction has 3001 states and 3405 transitions. [2020-10-29 07:27:41,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3405 transitions. [2020-10-29 07:27:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-29 07:27:41,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:41,783 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:41,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:27:41,783 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2112169331, now seen corresponding path program 1 times [2020-10-29 07:27:41,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:41,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265662630] [2020-10-29 07:27:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-29 07:27:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-29 07:27:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:42,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:27:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:27:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:42,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:42,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:42,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:42,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:42,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:42,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:42,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:27:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:42,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:43,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:43,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:27:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:27:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:27:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:27:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-29 07:27:43,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265662630] [2020-10-29 07:27:43,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:43,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:43,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846851426] [2020-10-29 07:27:43,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:43,644 INFO L87 Difference]: Start difference. First operand 3001 states and 3405 transitions. Second operand 7 states. [2020-10-29 07:27:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:46,885 INFO L93 Difference]: Finished difference Result 5464 states and 6315 transitions. [2020-10-29 07:27:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:27:46,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-29 07:27:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:46,913 INFO L225 Difference]: With dead ends: 5464 [2020-10-29 07:27:46,913 INFO L226 Difference]: Without dead ends: 3203 [2020-10-29 07:27:46,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:27:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-29 07:27:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3185. [2020-10-29 07:27:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-29 07:27:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3600 transitions. [2020-10-29 07:27:47,015 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3600 transitions. Word has length 627 [2020-10-29 07:27:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:47,016 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 3600 transitions. [2020-10-29 07:27:47,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3600 transitions. [2020-10-29 07:27:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2020-10-29 07:27:47,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:47,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:47,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:27:47,027 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash 766389870, now seen corresponding path program 1 times [2020-10-29 07:27:47,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:47,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539051944] [2020-10-29 07:27:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:47,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 725 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:27:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:27:49,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:49,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:27:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:27:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:27:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:27:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:27:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:49,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:49,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:27:49,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 629 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-29 07:27:49,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539051944] [2020-10-29 07:27:49,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:49,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:49,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417562566] [2020-10-29 07:27:49,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:49,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:49,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:49,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:49,925 INFO L87 Difference]: Start difference. First operand 3185 states and 3600 transitions. Second operand 7 states. [2020-10-29 07:27:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:52,247 INFO L93 Difference]: Finished difference Result 6928 states and 8117 transitions. [2020-10-29 07:27:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:27:52,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 703 [2020-10-29 07:27:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:52,261 INFO L225 Difference]: With dead ends: 6928 [2020-10-29 07:27:52,261 INFO L226 Difference]: Without dead ends: 4299 [2020-10-29 07:27:52,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:27:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2020-10-29 07:27:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 3925. [2020-10-29 07:27:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3925 states. [2020-10-29 07:27:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 4412 transitions. [2020-10-29 07:27:52,428 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 4412 transitions. Word has length 703 [2020-10-29 07:27:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:52,429 INFO L481 AbstractCegarLoop]: Abstraction has 3925 states and 4412 transitions. [2020-10-29 07:27:52,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 4412 transitions. [2020-10-29 07:27:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2020-10-29 07:27:52,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:52,442 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:27:52,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:27:52,442 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash -707057150, now seen corresponding path program 1 times [2020-10-29 07:27:52,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:52,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026497685] [2020-10-29 07:27:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:57,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:57,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 767 [2020-10-29 07:27:57,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:27:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:57,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:27:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:57,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:57,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:57,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:57,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:27:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:27:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:58,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:27:58,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:27:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:58,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:58,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:27:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:27:58,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:58,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:27:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:27:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:27:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:27:58,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 07:27:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-29 07:27:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:27:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 667 proven. 169 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2020-10-29 07:27:58,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026497685] [2020-10-29 07:27:58,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:58,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:58,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754229987] [2020-10-29 07:27:58,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:58,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:58,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:58,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:58,981 INFO L87 Difference]: Start difference. First operand 3925 states and 4412 transitions. Second operand 7 states. [2020-10-29 07:28:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:01,525 INFO L93 Difference]: Finished difference Result 8592 states and 9835 transitions. [2020-10-29 07:28:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:01,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 745 [2020-10-29 07:28:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:01,546 INFO L225 Difference]: With dead ends: 8592 [2020-10-29 07:28:01,546 INFO L226 Difference]: Without dead ends: 5407 [2020-10-29 07:28:01,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:28:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2020-10-29 07:28:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 4851. [2020-10-29 07:28:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4851 states. [2020-10-29 07:28:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 5456 transitions. [2020-10-29 07:28:01,662 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 5456 transitions. Word has length 745 [2020-10-29 07:28:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:01,662 INFO L481 AbstractCegarLoop]: Abstraction has 4851 states and 5456 transitions. [2020-10-29 07:28:01,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:28:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 5456 transitions. [2020-10-29 07:28:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-29 07:28:01,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:01,674 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:01,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:28:01,675 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1276418668, now seen corresponding path program 1 times [2020-10-29 07:28:01,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:01,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517982079] [2020-10-29 07:28:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:02,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:02,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:28:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:28:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:28:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:28:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:28:03,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-29 07:28:04,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517982079] [2020-10-29 07:28:04,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:04,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:28:04,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187550988] [2020-10-29 07:28:04,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:28:04,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:04,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:28:04,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:28:04,128 INFO L87 Difference]: Start difference. First operand 4851 states and 5456 transitions. Second operand 8 states. [2020-10-29 07:28:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:07,731 INFO L93 Difference]: Finished difference Result 10982 states and 12551 transitions. [2020-10-29 07:28:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:28:07,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 800 [2020-10-29 07:28:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:07,753 INFO L225 Difference]: With dead ends: 10982 [2020-10-29 07:28:07,754 INFO L226 Difference]: Without dead ends: 6501 [2020-10-29 07:28:07,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:28:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2020-10-29 07:28:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 4839. [2020-10-29 07:28:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-29 07:28:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 5334 transitions. [2020-10-29 07:28:07,887 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 5334 transitions. Word has length 800 [2020-10-29 07:28:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:07,888 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 5334 transitions. [2020-10-29 07:28:07,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:28:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 5334 transitions. [2020-10-29 07:28:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-29 07:28:07,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:07,901 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:07,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:28:07,901 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:07,902 INFO L82 PathProgramCache]: Analyzing trace with hash 949921531, now seen corresponding path program 1 times [2020-10-29 07:28:07,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:07,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997619842] [2020-10-29 07:28:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-29 07:28:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4688 [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 704 [2020-10-29 07:28:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:28:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:12,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:13,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:13,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:13,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:28:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:28:13,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:28:13,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:28:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:28:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:28:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:13,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-10-29 07:28:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:28:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 860 proven. 2 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2020-10-29 07:28:14,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997619842] [2020-10-29 07:28:14,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:14,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:28:14,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902221108] [2020-10-29 07:28:14,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:28:14,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:14,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:28:14,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:28:14,232 INFO L87 Difference]: Start difference. First operand 4839 states and 5334 transitions. Second operand 7 states. [2020-10-29 07:28:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:16,586 INFO L93 Difference]: Finished difference Result 8952 states and 9951 transitions. [2020-10-29 07:28:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:16,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 826 [2020-10-29 07:28:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:16,611 INFO L225 Difference]: With dead ends: 8952 [2020-10-29 07:28:16,611 INFO L226 Difference]: Without dead ends: 4847 [2020-10-29 07:28:16,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:28:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2020-10-29 07:28:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4463. [2020-10-29 07:28:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4463 states. [2020-10-29 07:28:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 4901 transitions. [2020-10-29 07:28:16,729 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 4901 transitions. Word has length 826 [2020-10-29 07:28:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:16,730 INFO L481 AbstractCegarLoop]: Abstraction has 4463 states and 4901 transitions. [2020-10-29 07:28:16,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:28:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 4901 transitions. [2020-10-29 07:28:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-29 07:28:16,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:16,751 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:16,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:28:16,751 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 495933772, now seen corresponding path program 1 times [2020-10-29 07:28:16,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:16,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36372039] [2020-10-29 07:28:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4603 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-29 07:28:21,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:28:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:21,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:21,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:28:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:22,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:28:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:28:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:28:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:22,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 07:28:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 904 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-29 07:28:23,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36372039] [2020-10-29 07:28:23,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:23,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:28:23,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163316740] [2020-10-29 07:28:23,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:28:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:23,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:28:23,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:28:23,155 INFO L87 Difference]: Start difference. First operand 4463 states and 4901 transitions. Second operand 7 states. [2020-10-29 07:28:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:25,629 INFO L93 Difference]: Finished difference Result 8930 states and 9905 transitions. [2020-10-29 07:28:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:28:25,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 829 [2020-10-29 07:28:25,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:25,661 INFO L225 Difference]: With dead ends: 8930 [2020-10-29 07:28:25,661 INFO L226 Difference]: Without dead ends: 4649 [2020-10-29 07:28:25,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:28:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2020-10-29 07:28:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4643. [2020-10-29 07:28:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4643 states. [2020-10-29 07:28:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 5057 transitions. [2020-10-29 07:28:25,774 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 5057 transitions. Word has length 829 [2020-10-29 07:28:25,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:25,775 INFO L481 AbstractCegarLoop]: Abstraction has 4643 states and 5057 transitions. [2020-10-29 07:28:25,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:28:25,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 5057 transitions. [2020-10-29 07:28:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2020-10-29 07:28:25,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:25,788 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:25,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:28:25,788 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:25,789 INFO L82 PathProgramCache]: Analyzing trace with hash -70474955, now seen corresponding path program 1 times [2020-10-29 07:28:25,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:25,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314427034] [2020-10-29 07:28:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 867 [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3005 [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:28:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:28:28,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 07:28:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:29,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:28:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:28:29,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:28:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:28:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:28:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:28:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:28:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:28:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:28:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:28:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:29,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:28:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:28:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:28:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 935 proven. 35 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-29 07:28:30,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314427034] [2020-10-29 07:28:30,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:30,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:28:30,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392930062] [2020-10-29 07:28:30,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:28:30,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:30,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:28:30,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:28:30,841 INFO L87 Difference]: Start difference. First operand 4643 states and 5057 transitions. Second operand 8 states. [2020-10-29 07:28:33,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:33,539 INFO L93 Difference]: Finished difference Result 10071 states and 11189 transitions. [2020-10-29 07:28:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:33,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 843 [2020-10-29 07:28:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:33,564 INFO L225 Difference]: With dead ends: 10071 [2020-10-29 07:28:33,564 INFO L226 Difference]: Without dead ends: 6317 [2020-10-29 07:28:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:28:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2020-10-29 07:28:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5947. [2020-10-29 07:28:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5947 states. [2020-10-29 07:28:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 6625 transitions. [2020-10-29 07:28:33,683 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 6625 transitions. Word has length 843 [2020-10-29 07:28:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:33,684 INFO L481 AbstractCegarLoop]: Abstraction has 5947 states and 6625 transitions. [2020-10-29 07:28:33,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:28:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 6625 transitions. [2020-10-29 07:28:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-29 07:28:33,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:33,697 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:33,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:28:33,697 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1179382889, now seen corresponding path program 1 times [2020-10-29 07:28:33,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:33,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477277857] [2020-10-29 07:28:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-29 07:28:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-10-29 07:28:36,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:28:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:28:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-29 07:28:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:36,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:36,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:28:36,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:36,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:36,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:36,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:36,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:28:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:37,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:37,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:37,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:37,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:37,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:28:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:28:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:28:37,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:28:37,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:28:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:28:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:37,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:37,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:28:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2365 backedges. 971 proven. 35 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-29 07:28:38,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477277857] [2020-10-29 07:28:38,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:38,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:28:38,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195260049] [2020-10-29 07:28:38,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:28:38,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:28:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:28:38,631 INFO L87 Difference]: Start difference. First operand 5947 states and 6625 transitions. Second operand 8 states. [2020-10-29 07:28:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:41,349 INFO L93 Difference]: Finished difference Result 11191 states and 12558 transitions. [2020-10-29 07:28:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:41,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 876 [2020-10-29 07:28:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:41,369 INFO L225 Difference]: With dead ends: 11191 [2020-10-29 07:28:41,369 INFO L226 Difference]: Without dead ends: 6135 [2020-10-29 07:28:41,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:28:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2020-10-29 07:28:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 5947. [2020-10-29 07:28:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5947 states. [2020-10-29 07:28:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5947 states to 5947 states and 6623 transitions. [2020-10-29 07:28:41,511 INFO L78 Accepts]: Start accepts. Automaton has 5947 states and 6623 transitions. Word has length 876 [2020-10-29 07:28:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:41,512 INFO L481 AbstractCegarLoop]: Abstraction has 5947 states and 6623 transitions. [2020-10-29 07:28:41,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:28:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5947 states and 6623 transitions. [2020-10-29 07:28:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-10-29 07:28:41,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:41,528 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:28:41,529 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2021904313, now seen corresponding path program 1 times [2020-10-29 07:28:41,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:41,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015520169] [2020-10-29 07:28:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:46,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 901 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4906 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 07:28:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:46,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:46,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:28:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:46,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:46,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:46,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:28:46,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:46,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:46,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:46,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:28:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:47,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:28:47,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:28:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:28:47,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:28:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:28:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:28:47,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:28:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:28:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:28:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:28:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:28:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:28:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2366 backedges. 951 proven. 56 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-29 07:28:48,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015520169] [2020-10-29 07:28:48,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:48,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:28:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983053040] [2020-10-29 07:28:48,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:28:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:28:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:28:48,609 INFO L87 Difference]: Start difference. First operand 5947 states and 6623 transitions. Second operand 8 states. [2020-10-29 07:28:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:52,138 INFO L93 Difference]: Finished difference Result 12082 states and 13598 transitions. [2020-10-29 07:28:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:28:52,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 877 [2020-10-29 07:28:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:52,156 INFO L225 Difference]: With dead ends: 12082 [2020-10-29 07:28:52,156 INFO L226 Difference]: Without dead ends: 7059 [2020-10-29 07:28:52,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:28:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2020-10-29 07:28:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 6505. [2020-10-29 07:28:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2020-10-29 07:28:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 7212 transitions. [2020-10-29 07:28:52,305 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 7212 transitions. Word has length 877 [2020-10-29 07:28:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:52,306 INFO L481 AbstractCegarLoop]: Abstraction has 6505 states and 7212 transitions. [2020-10-29 07:28:52,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:28:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 7212 transitions. [2020-10-29 07:28:52,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-29 07:28:52,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:52,320 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:52,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:28:52,320 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:52,321 INFO L82 PathProgramCache]: Analyzing trace with hash -593039704, now seen corresponding path program 1 times [2020-10-29 07:28:52,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:52,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609528289] [2020-10-29 07:28:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2037 [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-29 07:28:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 07:28:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:54,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:28:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:28:54,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:54,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:54,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:28:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:28:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:28:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:28:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:28:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:28:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:55,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:28:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 315 proven. 6 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2020-10-29 07:28:55,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609528289] [2020-10-29 07:28:55,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:55,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:28:55,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788919116] [2020-10-29 07:28:55,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:28:55,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:55,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:28:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:28:55,767 INFO L87 Difference]: Start difference. First operand 6505 states and 7212 transitions. Second operand 5 states. [2020-10-29 07:28:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:57,579 INFO L93 Difference]: Finished difference Result 13004 states and 14530 transitions. [2020-10-29 07:28:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:28:57,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 903 [2020-10-29 07:28:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:57,599 INFO L225 Difference]: With dead ends: 13004 [2020-10-29 07:28:57,599 INFO L226 Difference]: Without dead ends: 7423 [2020-10-29 07:28:57,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:28:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2020-10-29 07:28:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 6873. [2020-10-29 07:28:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6873 states. [2020-10-29 07:28:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 7641 transitions. [2020-10-29 07:28:57,757 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 7641 transitions. Word has length 903 [2020-10-29 07:28:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:57,758 INFO L481 AbstractCegarLoop]: Abstraction has 6873 states and 7641 transitions. [2020-10-29 07:28:57,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:28:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 7641 transitions. [2020-10-29 07:28:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-29 07:28:57,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:57,778 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:28:57,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:28:57,778 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash -123493694, now seen corresponding path program 1 times [2020-10-29 07:28:57,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:57,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967054748] [2020-10-29 07:28:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:02,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 07:29:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:29:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:29:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:29:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:29:03,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:29:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:29:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:29:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:29:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:29:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:29:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:29:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:03,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:29:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:29:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:29:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-29 07:29:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:04,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:04,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:29:04,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:29:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2989 backedges. 1567 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:29:05,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967054748] [2020-10-29 07:29:05,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:29:05,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:29:05,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913825354] [2020-10-29 07:29:05,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:29:05,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:29:05,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:29:05,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:29:05,120 INFO L87 Difference]: Start difference. First operand 6873 states and 7641 transitions. Second operand 10 states. [2020-10-29 07:29:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:29:08,660 INFO L93 Difference]: Finished difference Result 13106 states and 14661 transitions. [2020-10-29 07:29:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 07:29:08,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 960 [2020-10-29 07:29:08,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:29:08,679 INFO L225 Difference]: With dead ends: 13106 [2020-10-29 07:29:08,679 INFO L226 Difference]: Without dead ends: 7081 [2020-10-29 07:29:08,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2020-10-29 07:29:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2020-10-29 07:29:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 6863. [2020-10-29 07:29:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6863 states. [2020-10-29 07:29:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 7585 transitions. [2020-10-29 07:29:08,828 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 7585 transitions. Word has length 960 [2020-10-29 07:29:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:29:08,829 INFO L481 AbstractCegarLoop]: Abstraction has 6863 states and 7585 transitions. [2020-10-29 07:29:08,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:29:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 7585 transitions. [2020-10-29 07:29:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-29 07:29:08,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:29:08,843 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:29:08,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 07:29:08,844 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:29:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:29:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash -630036677, now seen corresponding path program 1 times [2020-10-29 07:29:08,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:29:08,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095805016] [2020-10-29 07:29:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:29:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4242 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:29:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-29 07:29:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 07:29:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:29:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:29:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:29:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:29:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:29:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:29:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:29:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:29:13,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:29:13,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:29:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:29:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:29:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-29 07:29:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:29:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:29:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:29:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 744 proven. 60 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-29 07:29:14,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095805016] [2020-10-29 07:29:14,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:29:14,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:29:14,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087699097] [2020-10-29 07:29:14,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:29:14,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:29:14,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:29:14,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:29:14,926 INFO L87 Difference]: Start difference. First operand 6863 states and 7585 transitions. Second operand 8 states. [2020-10-29 07:29:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:29:18,361 INFO L93 Difference]: Finished difference Result 14286 states and 15855 transitions. [2020-10-29 07:29:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:29:18,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 962 [2020-10-29 07:29:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:29:18,388 INFO L225 Difference]: With dead ends: 14286 [2020-10-29 07:29:18,388 INFO L226 Difference]: Without dead ends: 8347 [2020-10-29 07:29:18,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:29:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2020-10-29 07:29:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 7239. [2020-10-29 07:29:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7239 states. [2020-10-29 07:29:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7239 states to 7239 states and 8009 transitions. [2020-10-29 07:29:18,533 INFO L78 Accepts]: Start accepts. Automaton has 7239 states and 8009 transitions. Word has length 962 [2020-10-29 07:29:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:29:18,534 INFO L481 AbstractCegarLoop]: Abstraction has 7239 states and 8009 transitions. [2020-10-29 07:29:18,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:29:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7239 states and 8009 transitions. [2020-10-29 07:29:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-29 07:29:18,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:29:18,549 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:29:18,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 07:29:18,549 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:29:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:29:18,550 INFO L82 PathProgramCache]: Analyzing trace with hash 538500979, now seen corresponding path program 1 times [2020-10-29 07:29:18,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:29:18,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121319978] [2020-10-29 07:29:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:29:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:21,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 07:29:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:29:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-10-29 07:29:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:29:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-29 07:29:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:29:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:29:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:29:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:29:22,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:29:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:29:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:29:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:29:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:29:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:29:22,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:29:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:29:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:29:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:29:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:23,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-10-29 07:29:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:23,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:29:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:29:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2682 backedges. 862 proven. 2 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2020-10-29 07:29:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121319978] [2020-10-29 07:29:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:29:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:29:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499297916] [2020-10-29 07:29:23,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:29:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:29:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:29:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:29:23,949 INFO L87 Difference]: Start difference. First operand 7239 states and 8009 transitions. Second operand 8 states. [2020-10-29 07:29:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:29:26,338 INFO L93 Difference]: Finished difference Result 13924 states and 15468 transitions. [2020-10-29 07:29:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:29:26,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 986 [2020-10-29 07:29:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:29:26,359 INFO L225 Difference]: With dead ends: 13924 [2020-10-29 07:29:26,360 INFO L226 Difference]: Without dead ends: 7041 [2020-10-29 07:29:26,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:29:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2020-10-29 07:29:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 7037. [2020-10-29 07:29:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2020-10-29 07:29:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 7664 transitions. [2020-10-29 07:29:26,515 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 7664 transitions. Word has length 986 [2020-10-29 07:29:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:29:26,516 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 7664 transitions. [2020-10-29 07:29:26,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:29:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 7664 transitions. [2020-10-29 07:29:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-29 07:29:26,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:29:26,533 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:29:26,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 07:29:26,533 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:29:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:29:26,534 INFO L82 PathProgramCache]: Analyzing trace with hash -464676864, now seen corresponding path program 1 times [2020-10-29 07:29:26,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:29:26,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324652817] [2020-10-29 07:29:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:29:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking...